using table tree by key column UI element

[Former Member]

hi,

I have table tree by key column and a button in my view.

i want to enable the button for the selection of only leaf elements.

i.e.in the 3 rd level i have leaf (no further sub node) elements.

i want to enable the button for these elements only.for the higher nodes i.e. for the 1st and 2 nd level i want to disable the button.

please any sample code for this?

Regards,

Lakshmi.

[Former Member · Accepted solution]

Hi Lakshmi,

check this component WDT_TREE_TABLE_BY_KEY.(this is also having 3 levels with 3rd level as leaf)

and the method GENERATE_DATA.

Bind an attribute of type wdy_boolean to button enabled property and set the attribute value in GENERATE_DATA method by checking the conidition

row-is_leaf = abap_true.

Hope it helps

[Former Member · Accepted solution]

write an action on lead select of the table and check if the selected row is a leaf set enabled property to button or else disabled.

sample code is as follows

DATA lo_nd_table_data_source TYPE REF TO if_wd_context_node.

DATA lo_el_table_data_source TYPE REF TO if_wd_context_element.

DATA ls_table_data_source TYPE wd_this->element_table_data_source.

DATA lv_is_leaf LIKE ls_table_data_source-is_leaf.

DATA lv_enabled LIKE ls_table_data_source-enabled.

• navigate from <CONTEXT> to <TABLE_DATA_SOURCE> via lead selection

lo_nd_table_data_source = wd_context->get_child_node( name = wd_this->wdctx_table_data_source ).

• @TODO handle not set lead selection

IF lo_nd_table_data_source IS INITIAL.

ENDIF.

• get element via lead selection

lo_el_table_data_source = lo_nd_table_data_source->get_element( ).

• @TODO handle not set lead selection

IF lo_el_table_data_source IS INITIAL.

ENDIF.

• alternative access via index

• lo_el_table_data_source = lo_nd_table_data_source->get_element( index = 1 ).

• @TODO handle non existant child

• IF lo_el_table_data_source IS INITIAL.

• ENDIF.

• get single attribute

lo_el_table_data_source->get_attribute(

EXPORTING

name = `IS_LEAF`

IMPORTING

value = lv_is_leaf ).

if lv_is_leaf eq abap_true.

lo_el_table_data_source->set_attribute(

name = `ENABLED`

value = abap_true ).

else.

lo_el_table_data_source->set_attribute(

name = `ENABLED`

value = abap_false ).

endif.